文件名称：FTP源代码例子
文件大小：355KB
文件格式：ZIP
更新时间：2016-04-18 14:01:40
Java
package ftp; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.ServletException; import java.io.FileInputStream; import java.io.IOException; import sun.net.TelnetOutputStream; import sun.net.ftp.FtpClient; public class MainCtrl extends HttpServlet { private FtpClient ftpClient; public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/html; charset=UTF-8"); try { //连接ftp服务器 connectServer("10.10.1.2", "zz3z2008", "zz3z2008", "upftp"); //上传文件;并返回上传文件的信息 req.setAttribute("inf", upload(req.getParameter("file_name"))); } catch (Exception e) { System.out.println(e.toString()); req.setAttribute("inf", e.toString()); req.getRequestDispatcher("view_inf.jsp").forward(req, resp); return; } finally { if (ftpClient != null) { ftpClient.closeServer(); } } req.getRequestDispatcher("view_inf.jsp").forward(req, resp); } public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } //连接ftp服务器 private void connectServer(String server, String user, String password, String path) throws IOException { // server：FTP服务器的IP地址；user:登录FTP服务器的用户名 // password：登录FTP服务器的用户名的口令；path：FTP服务器上的路径 ftpClient = new FtpClient(); ftpClient.openServer(server); ftpClient.login(user, password); //path是ftp服务下主目录的子目录 if (path.length() != 0) ftpClient.cd(path); //用2进制上传 ftpClient.binary(); } //上传文件;并返回上传文件的信息 private String upload(String filename) throws Exception { TelnetOutputStream os = null; FileInputStream is = null; try { //"upftpfile"用ftp上传后的新文件名 //os = ftpClient.put("upftpfile"); os = ftpClient.put("MainCtrl.zip"); java.io.File file_in = new java.io.File(filename); if (file_in.length()==0) { return "上传文件为空!"; } is = new FileInputStream(file_in); byte[] bytes = new byte[1024]; int c; while ((c = is.read(bytes)) != -1) { os.write(bytes, 0, c); } } finally { if (is != null) { is.close(); } if (os != null) { os.close(); } } return "上传文件成功!"; } } 文件2：upftp.htm(前台操作页面)内容如下：